Ryu Manatsu
Ryu Manatsu is a Japanese actor, singer and voice actor perhaps best known for his role as Gen Ohtori/Ultraman Leo in the Ultraman Series. He performed the show's theme song heard in the first 12 episodes as well.
Filmography
GARO
Ultraman Leo
Engine Sentai Go-Onger
Cutie Honey Flash
Ultra Fight Victory
Ultra Galaxy Legend Side Story: Ultraman Zero vs. Darklops Zero - Stage I: Cosmic Collision
Ultraman Saga
Kindaichi Case Files: Death God Hospital Murder Case
Outer Man
Ultra Galaxy Legend Side Story: Ultraman Zero vs. Darklops Zero - Stage II: Zero's Suicide Zone
Kaiju Mono
Fire Fox Tochionger Seven, the Movie: King of Hell
Akio Jissoji's Mystery File 3